<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        #big{
            width: 200px;
            height: 200px;
            background-color: green;
            overflow: hidden;
        }
        #big>div{
            width: 50px;
            height: 50px;
            background-color: red;
            margin-left: 50px;
            margin-top: 50px;
        }
        #sp1{
            margin-right: 50px;
            margin-bottom: 50px;
        }
        #sp2{
            margin-left: 50px;
        }
        #d1{
            width: 100px;
            height: 100px;
            border: 1px solid orange;
            margin-left: 100px;
            margin-top: 50px;
            margin-bottom: 50px;
            margin-right: 50px;
            margin: 30px;
            margin: 50px 100px;
            /*上右下左顺时针赋值*/
            margin: 10px 20px 30px 40px;
        }
        #d2{
            width: 100px;
            height: 100px;
            border: 1px solid orange;
            margin-top: 30px;
        }
    </style>
</head>
<body>
    <div id="big">
        <div></div>
    </div>
    <span id="sp1">span1</span>
    <span id="sp2">span2</span>
    <div id="d1">div1</div>
    <div id="d2">div2</div>
</body>
</html>
